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A209223
Number of n X 7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 0 and 1 1 1 vertically.
1
40, 1600, 1296, 3312, 6900, 15984, 38232, 80400, 197976, 449228, 1002540, 2382720, 5427180, 12493160, 28565504, 66402540, 153375600, 346691720, 810423876, 1869448176, 4247091288, 9846872812, 22767034560, 52106780512, 119650563196
OFFSET
1,1
COMMENTS
Column 7 of A209224.
LINKS
EXAMPLE
Some solutions for n=4
..1..0..0..1..1..0..0....0..0..1..1..0..1..1....1..1..1..0..1..1..0
..0..1..1..0..0..1..1....0..1..1..1..0..0..1....1..1..0..0..1..1..0
..0..1..1..1..0..1..1....1..1..0..0..1..1..0....0..0..1..1..0..0..1
..1..0..0..1..1..0..0....1..0..0..1..1..1..0....0..1..1..1..0..1..1
CROSSREFS
Cf. A209224.
Sequence in context: A170759 A218742 A158703 * A207692 A207927 A208107
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 06 2012
STATUS
approved